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   RE: [xml-dev] The use of XML syntax in XML Query

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  • To: <xml-dev@lists.xml.org>
  • Subject: RE: [xml-dev] The use of XML syntax in XML Query
  • From: "Julian Reschke" <julian.reschke@gmx.de>
  • Date: Sat, 5 Jan 2002 11:38:05 +0100
  • Importance: Normal
  • In-reply-to: <004901c19570$a1a0a4a0$0100007f@beasys.com>


> From: David Orchard [mailto:dorchard@bea.com]
> Sent: Friday, January 04, 2002 11:14 PM
> To: 'Jonathan Robie'; 'Julian Reschke'; 'Evan Lenz'; 'David Carlisle'
> Cc: xml-dev@lists.xml.org
> Subject: RE: [xml-dev] The use of XML syntax in XML Query
> The terms namespace URI and namespace name are equivalent.  I did some
> research on this a little while ago.  Turns out that there was an
> effort to
> unify these terms to namespace name, but it didn't really happen.
>  I believe
> namespace name is the correct term as per xml namespace and xpath.
> Personally, I prefer namespace name rather than namespace URI as
> URI is the
> data type.  I like to refer to things by names (even namespace
> names) rather
> than by value.

So do I. But the datatype is NOT URI, it's a URI reference.

>  ...
> Imagine if we had let namespaces contain relative URIs, then we'd have to

They are allowed, just "deprecated" by a separate note.

> change all of our terminology to namespace URI references.  And then if we

It *is* a URI reference. Just because the W3C later decided that relative
URI references shouldn't be used doesn't make every legal namespace name a

For instance, the namespace name "http://greenbytes.com#reference"; is
perfectly ok (it's not relative), yet it's a URI reference, not a URI. Thus
(as you said), I think it's wrong to talk about the "namespace URI". It may
not be a URI.

Regards, Julian


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